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Design and Simulation of Piezoelectric Vibration Energy Harvesters of Various Shapes using COMSOL Multiphysics®

Priya Chhabra[1], Arjun Shetty[2]
[1]Electronic Science Department , Kurukshetra University, Kurukshetra, Haryana, India
[2]Electrical Communication Engineering, Indian Institute of Science, Bangalore, Karnataka, India

Various cantilever geometries (conventional rectangular,pi,Tandtriangular) are simulated using the Structural Mechanics module of COMSOL Multiphysics® to compare their spring constants. A layer of piezoelectric material (ZnO,AlN and PZT are modeled) is added to the cantilever and using the Piezoelectric Devices physics of COMSOL Multiphysics®, we determine the piezoelectric voltage that is generated in each of these cases.